Adrenal Gland Disease: Strong Fear & Palpitations

Several months ago, I experienced a sudden and strong fear in one of the cafes, to the point that I felt a squeeze in my heart, pain, and a very strong palpitation, as if it had reached my stomach. I had to cough to relieve the palpitations and suffocation. Days later, I quickly became afraid of the simplest, even daily, situations, even if a simple emotion caused me strong palpitations and suffocation. And the tremors and coldness of the extremities. I read about diseases of the adrenal gland and became very afraid. The condition increased with great fear. I now cannot stand leaving the house and am very afraid of any feelings, even if the feelings are happiness or good feelings and also i get dizzy when i stand up too fast is it possible that there is something dangerous with the adrenal gland?